Imposed changes in social conduct and the dynamics of living in cities, during COVID-19 pandemic, triggered an increase in the demand, availability, and accessibility of open public spaces. This has put forward questions of the relationship between open public spaces and disease transmission, as well as how planning and design strategies might be used to improve resilience in the face of future pandemics. Within this academic framework, this study focuses on object detection and human movement prediction in open public spaces, using the city of Sarajevo as a case study. Video recordings of parks and squares in morning, afternoon and evening are utilized to detect humans and predict their movements. Frame differentiation method proved to be the best for object detection and their motion. Linear regression is used on a dataset collected using the space syntax observation technique gate method. The best R-2 values, 0.97 and 0.61, are achieved for weekdays, for both parks and squares. Authors associated it with the dynamics of space use and frequency of space occupancy, which can be related to physical conditions and activity content of selected locations. The results of study provide an insight into analysis and prediction of direction, as well as density of pedestrian movement, which could be used in decision making directed towards more efficient and health oriented urban planning.

The Internet of Things (IoT) connects everyone in the smart world, so the energy consumption of IoT technology is a challenging and attractive research area. The development of technology in the field of IoT has changed the way of life and enriched society with its benefits, but we must not ignore the fact that IoT consumes energy, contributes to toxic pollution, and generates electrical waste. To increase the benefits and reduce the harmfulness of IoT, there are increasing tendencies to move towards green IoT (G-IoT). The G-IoT is considered the future environmentally friendly IoT. Greening ICT technology plays a key role in G-IoT and promises many benefits to society such as efficient production, and reducing the energy used to design and distribute ICT devices and equipment. This paper will present a comprehensive overview of G-IoT technologies and strategies that demonstrate work and efforts to build a green and smart world, contributing to a safe and healthy environment, smart and high quality of life based on enabling technologies, reducing pollution, and reducing energy consumption. ICT technologies that enable G-IoT include Green RFID, Green Wireless Sensor Network (GWSN), Green Cloud Computing (GCC), Green M2M (G-M2M), and Green Data Center (GDC). The paper will also present an analysis of the importance of environmental technology processes in sustainable development, exploring the principles and roles of G-IoT in the progress of society through examining its potential for improving quality of life, environment, economic growth, and green global modernization.

The main aim of the paper is modeling and simulation of fiber optic transmission. It also deals with ways to increase the capacity of fiber optic transmission links by using WDM (Wavelength Division Multiplexing) system. The parameters of the fiber optic transmission link were measured on a real optical transmission links and a model for simulation was set up. A simulation of increasing the capacity of a fiber optic transmission link was made in two ways. The first one is to increase the transmission speeds of the individual channels of the WDM system, and the second one is to increase the number of WDM system channels with lower individual speeds. The simulation results showed that the second method provides better quality of WDM service. The additional experiment was done on an existing ITU T G.655 optical fiber intended for WDM systems whose parameters were measured. Bit error rate and Q parameter for WDM system of 4 and 16 channel was used to check quality of proposed solution.

Nowadays, when applications are being developed faster with the introduction of agile methodologies and new technologies, microservices are emerging. The microservices make applications easier to create and maintain when broken down into smaller parts, which form a whole application. RabbitMQ acts as an intermediary between the various services. It reduces the load and delivery time on server web applications by delegating tasks that would typically take a lot of time and resources. Message queuing allows web servers to respond quickly to requests rather than being forced to perform complex procedures that can take more time and resources. AMQP (Advanced Message Queuing Protocol) is a message protocol that deals with publishers and consumers like any other messaging system. Publishers produce messages while consumers download and process them. The job of message brokers, such as RabbitMQ, is to ensure that messages from publishers go to the right consumers. To do this, the broker uses two key components: exchange and order. We demonstrated that the style of microservice architecture is an approach to the development of an application as a set of small services, each in charge of its own process and communication with other services.

In the last few years, we have been active participants in globalization and the rapid growth of online commerce. This trend directly impacts logistics, postal, and courier companies. Challenges are visible in the growth and development of these companies, as well as quality of task execution and the ability to adapt to market conditions. With the impact of the SARS-COV-19 virus on the market, and due to locks during the pandemic, shoppers were forced to buy products online. This effect accelerated the trend of purchases via e-commerce, which increased the number of parcels in the technological phases of pick-up and delivery. These companies are the bearers of the first and last technological phase of shipment transport. Due to the increase in the number of shipments, postal and logistics companies are under great pressure. This is because of certain restrictions introduced during the pandemic, but also because of costs, especially fixed costs in the first and last phase of transport. This paper proposes an outsourcing model for the pick-up and delivery to convert fixed costs into variable ones.

The aim of this paper is to determine the differences between externalized and internalized behavioral problems in the population of young adolescents in the city of Tuzla on eight different scales of syndromes (anxiety/depression, reticence, physical difficulties, aggression, rules violation, social problems, thinking problems, and attention problems). The paper starts from the assumption that there are differences between younger adolescents with internalized and externalized behavioral problems with regard to gender in such a way that externalized problems will be more frequent in male adolescents and internalized behavioral problems in female adolescents. The sample of respondents in this study consists of 587 young adolescents of both genders. The research was conducted in fifteen primary schools in the city of Tuzla. The Achenbach dimensional classification of behavioral disorders was used for assessment (Achenbach & Rescorla, 2001). The results show higher scores for internalized behavioral problems. Female adolescents had statistically significantly higher scores on the Anxiety/Depression, Somatic Problems, and Thought Problems subscales.

The aim of the paper is to present the results of the VNTR gene polymorphism genetic variants molecular typing for endothelial nitric oxide synthase (eNOS) in human population of Tuzla Canton. Based on the analysis of the distribution of eNOS gene genotypes in the total sample of respondents, the highest frequency was recorded for the (b/b) genotype, which was 73.0%. For the heterozygous (a/b) genotype of the eNOS gene, a frequency of 24.0% was determined, and a frequency of 3.0% was recorded for the (a/a) genotype. The research resulted in a database of local and global significance, namely, the incorporation of these data into the existing regional and European genetic database.

The main objective of this study is to compare the performance of two areas of banking in Bosnia and Herzegovina, that is, Islamic and conventional banking. In order to measure the performance of two banking sectors, profitability, efficiency and liquidity measures are implemented. For the purpose of the study secondary data from both banking sectors is used. The time interval covered in the study spans from 2008 to 2020. Ratio analysis and independent sample t-test is applied in order to check the characteristics of two banking sectors. Currently, studies investigating comparative performance of these two banking sectors in BiH are rare, therefore theoretical contribution will be evident. Practically, it will help bank customers to understand how Islamic banking sector performs relative to the conventional banking sector. Also, bank managers of selected banks will be able to compare performance of their banks relative to the other banks in terms of the ratios used in the study. The limitation of the study is that in Bosnia and Herzegovina there is only one bank that operates according to Islamic banking principles, which will represent Islamic banking sector in this study.

The development of Floating Solar Photovoltaic (FPV) systems is a sign of a promising future in the Renewable Energy field. Numerous solar modules and inverters are mounted on large-scale floating platforms. It is important to design the system so that the inverter operates in its optimum range most of the time. In order to achieve this goal on the DC side, serial and parallel connections of solar modules are used. As a result, the cabling of the PV array architecture is an important issue. Modern electrical installation design requires reducing costs in cabling materials, equipment installation, and maintenance. The reduction of losses and the amount of time required to complete the design are also significant. Therefore, the main topic of this paper is DC cabling in large-scale FPV power plants (>1 MV). The serial-parallel (SP) connection scheme of solar modules and the percentage of power loss in DC cables are considered. Furthermore, a general method for determining cable lengths for FPV power plants is defined. The temperature influence on losses in DC cables is analyzed. A new method for determining the current at the maximum power point (MPP) as a function of temperature is proposed. A case study is conducted using a hypothetical 3 MW FPV power plant, and the obtained results are presented and analyzed.

The aim of the study was to develop Macedonian monosyllabic and disyllabic tests for speech audiometry, to record the speech materials, and to conduct clinical validation of the tests. The following criteria were applied: word familiarity, phonetic balance, and homogeneity of audibility. Clinical validation was conducted on a sample of 30 normal hearing subjects, aged 18 to 30 years. We developed four open-set tests for speech threshold and suprathreshold testing in quiet. The tests contain two word lists with 50 monosyllabic words and two word lists with 36 disyllabic words. Each word was introduced by a carrier phrase. Psychometric function slope from 20% to 80% correct recognition for all words was 5%/ dB. The difference between the presentation levels at which the subjects repeated all the words was ≤ 4 dB. Developed phonetically balanced word lists have relatively steep psychometric function slope and they are homogeneous in terms of the audibility.

The aim of this paper was to examine the literacy skills of deaf and hard of hearing people in electronic form writing and to compare these skills in relation to standard (“paper-pencil”) writing. The sample included 50 deaf and hard of hearing students aged from 12 to 20 years. The students were supposed to have basic literacy to be able to answer questions by writing. The Questionnaire for determining basic electronic literacy, which consisted of 15 simple questions about the student’s everyday life, was used. Variables used: correct response, vocabulary, and spelling mistakes, i.e., substitution, omission, addition, and metathesis. The test was performed at two different time intervals and in two different forms (standard and electronic forms). Data were processed by descriptive analysis and t-test. More favorable results were obtained in favor of standard writing compared to electronic writing on all variables except for vocabulary. Statistically significant differences were found for the variables vocabulary, omission, and substitution. It is important that there is also communication competence, and especially better language competence expressed in electronic form. More complex activities, such as education, studying, or doing business, require language competence for electronic expression.

Supporting the expansion of best practices in Biomedical Engineering (BME) can facilitate pathway toward the providing universal health coverage and more equitable and accessible healthcare technologies, especially in low- and middle-income (LMI) settings. These best practices can act as drivers of change and may involve scientific-technological issues, human intervention during technology development, educational aspects, social performance management for improved interactions along the medical technology life cycle, methods for managing resources and approaches for the establishment of regulatory frameworks. The aim of our study was to identify weaknesses and strengths of the scientific, technological, socio-political, regulatory and educational landscape in BME in LMI resource settings. We thus analysed the current state-of-the-art through six dimensions considered fundamental for advancing quality and equity in healthcare: 1) relevant and 2) emergent technologies, 3) new paradigms in medical technology development, 4) innovative BME education, 5) regulation and standardization for novel approaches, and 6) policy making. In order to evaluate and compare their relevance, maturity and implementation challenges, they were assessed through a questionnaire to which 100 professionals from 35 countries with recognized experience in the field of BME and its application to LMI settings responded. The results are presented and discussed, highlighting the main challenges and pinpointing relevant areas where intervention, including local lobbying and international promotion of best practices is necessary. We were also able to identify areas where minimal effort is required to make big changes in global health.